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Cited by 239Cosmology and Gravitation TheoriesNoncommutative and Quantum Gravity TheoriesDark Matter and Cosmic Phenomena

Probing cosmic acceleration beyond the equation of state: Distinguishing between dark energy and modified gravity models

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Ishak, Mustapha, Upadhye, Amol, Spergel, David N.·2006·Physical Review D
DOI 10.1103/physrevd.74.043513
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Abstract

If general relativity is the correct theory of physics on large scales, then there is a differential equation that relates the Hubble expansion function, inferred from measurements of angular diameter distance and luminosity distance, to the growth rate of large scale structure. For a dark energy fluid without couplings or an unusual sound speed, deviations from this consistency relationship could be the signature of modified gravity on cosmological scales. We propose a procedure based on this consistency relation in order to distinguish between some dark energy models and modified gravity models. The procedure uses different combinations of cosmological observations and is able to find inconsistencies when present. As an example, we apply the procedure to a universe described by a recently proposed 5-dimensional modified gravity model. We show that this leads to an inconsistency within the dark energy parameter space detectable by future experiments.

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  • By measuring growth of large-scale structure and luminosity and angular distances as functions of redshift via weak lensing, large-scale structure, supernovae, and cluster counting, LSST data can reveal whether recent cosmic acceleration is due to dark energy or modified gravity.

    “By simultaneously measuring the growth of large-scale structure and luminosity and angular distances as functions of redshift ( via WL, LSS, SN, and cluster counting ) , LSST data can reveal whether the recent cosmic acceleration is due to dark energy or modi fi ed gravity”

    From LSST: From Science Drivers to Reference Design and Anticipated Data Products (2019) · cites this paper as Ishak et al. 2006

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Research works printed but not linked: 5

  1. [10]S.M.Carroll, W.H. Press and E.L. Turner, Ann. Rev. Astron. Astrophys., 30 , 499 (1992);
  2. [26]E. Linder, Phys. Rev. Lett., 90, 091301 (2003).
  3. [45]M. Zaldarriaga, U. Seljak, cwApJS, 129, 431 (2000).
  4. [47]J. Albert et al. for the SNAP collaboration, astro-ph/0507460 (2005). · arXiv
  5. [51]Press et al., Numerical Recipes in C, Cambridge Uni- versity Press (1992); S. Dodelson, Modern Cosmology, Academic Press (2003); Tegmark, Taylor, and Heavens, Astrophys.J. 480, 22 (1997).

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Authors
Ishak, M., Upadhye, A., & Spergel, D. N.
Affiliations
  • The University of Texas at Dallas (US)
  • Princeton University (US)
ORCID
Venue
Physical Review D
Publisher
American Physical Society (APS)
Published
2006-08-15
Volume
74
Issue
4
ISSN
  • 0556-2821 (ISSN-L)
  • 1550-7998
  • 1550-2368
DOI
10.1103/physrevd.74.043513
OpenAlex
W2044422425
Cited by
239
References
55
Citations by year
2026: 1 · 2025: 3 · 2024: 2 · 2023: 7 · 2022: 3 · 2021: 6 · 2020: 3 · 2019: 7 · 2018: 7 · 2017: 8 · 2016: 17 · 2015: 6 · 2014: 11 · 2013: 10 · 2012: 10
FWCI
15.87
Type
journal article
Language
en
Open access
Licence
link.aps.org/licenses/aps-default-license (vor)
Locations
  • Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields (publishedVersion)
  • arXiv (Cornell University) (acceptedVersion)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
  • Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Noncommutative and Quantum Gravity Theories
  • Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Dark Matter and Cosmic Phenomena
Keywords
cosmic acceleration, dark energy, modified gravity, consistency relations, Hubble expansion, angular diameter distance, luminosity distance, large-scale structure growth, dark energy equation of state, sound velocity, five-dimensional gravity

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